Start working on the chuncked crc check for LCU.

- added function calls in ls hdl and defines in ls hdl header
- written skeleton of functions
- add feedback events in ls


TBD
- complete the chunk functions (where !!!!!!! is found)
- add entry in cmd_seq
- add entry in cmd len table
- add entry in tx control table

ADG 25/02/2010

cmd_seq modified to accept new TC
Err_hdl modified to include new errors
ls_hdl modified to include new "chunk" procedures

Things to be done: 
- add entry in cmd len table
- add entry in tx control table

ADG 26/02/2010

- cmd and tx control table updated
- minor modifications
- version set to 6.4
- avm2 constants not changed

this is 6.4 beta

- adding dedug messages, search for "// debugmsg"
- len of TC 8,4,3,6 corrected 


ADG 26/02/2010
debug messages eliminated
condition to update checksum corrected after tests
release version